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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Anesth Analg. 2020 Jul;131(1):255–262. doi: 10.1213/ANE.0000000000004456

Figure 1:

Figure 1:

Flow diagram of study population selection. LPCH – Lucile Packard Children’s Hospital Stanford; ASA – American Society of Anesthesiologists; RVUs – Relative Value Units